/* 清除元素内外边距 */

* {
    margin: 0;
    padding: 0;
}


/* 去除链接下划线 */

a {
    color: #333;
    text-decoration: none;
}

em,
i {
    font-style: normal;
}

ul {
    list-style-type: none;
}

input {
    outline: none;
}